anglekhan101
16.01.2020 •
Mathematics
It takes lola .62 hours to ride her skateboard 6.2 miles. what is her speed in miles per hour
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Ответ:
10mph
Step-by-step explanation:
it's a ratio
6.2 miles divided by .62=10
Ответ:
Set the first number is a and the second is b.
We have two equations: a+2xb=24, 2xa+b=21
And we have 2xa+4xb=48 or 2xa=48-4xb
So: 48-4xb+b=21 or -3xb=21-48=-27 and we got b=-27:(-3)=9 and a= 6
a=6 and b=9